DORT - Type 7710

Deep Oceanographic Release Transponders (DORTs) is tough, reliable acoustic releases designed for deployment in either 6,000 metres of water.
The units are commonly used to moor oceanographic instrument strings on the seabed for periods of up to 36 months. However, their compact size allows them to be easily incorporated into subsea instrument frames or installed on towfish and AUVs to enable ballast to be dropped in an emergency.
Standard features include a Safe Working Load of 1,275 kg (at 4:1) and a spring-assisted release mechanism. This type of release mechanism was originally developed by Sonardyne for navigation transponders supplied to the offshore industry of which there are now many thousands reliably in service around the world.
DORTs is controlled using frequency band specific Lightweight Command Units (LCU) which comprises of a dunking transducer connected either to a spray-proof Psion or, via supplied software, to any PC. For security of operation, a special coding system provides protection against accidental release by noise and acoustic transmissions from other vessels.

Manufacturer

Sonardyne International Ltd.
Sonardyne International Ltd.

Blackbushe Business Park
Yateley, Hampshire, GU46 6GD
United Kingdom

+44 (0) 1252-872288

+44 (0) 1252-876100

http://www.sonardyne.com

Technical specifications

Release load
Safe working load
Max. load
Depth rating
Frequency range
Battery life
Dimensions
Weight in air
Weight in water
Materials

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